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<FONT color="green">001</FONT>    package com.google.code.wicket.auth.component.marker;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.lang.reflect.Array;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.util.Arrays;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.util.Collection;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.util.Collections;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.util.HashSet;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    import org.apache.wicket.Component;<a name="line.9"></a>
<FONT color="green">010</FONT>    import org.apache.wicket.MetaDataKey;<a name="line.10"></a>
<FONT color="green">011</FONT>    <a name="line.11"></a>
<FONT color="green">012</FONT>    /**<a name="line.12"></a>
<FONT color="green">013</FONT>     * Base implementation of {@link Marker} that deals with storing and retrieving<a name="line.13"></a>
<FONT color="green">014</FONT>     * meta data and just lets you handle missing privileges.<a name="line.14"></a>
<FONT color="green">015</FONT>     * <a name="line.15"></a>
<FONT color="green">016</FONT>     * @param &lt;T&gt;<a name="line.16"></a>
<FONT color="green">017</FONT>     *            the privilege type<a name="line.17"></a>
<FONT color="green">018</FONT>     */<a name="line.18"></a>
<FONT color="green">019</FONT>    public abstract class MarkerSupport&lt;T&gt; implements Marker&lt;T&gt; {<a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>        private final Class&lt;T&gt; privilegeType;<a name="line.21"></a>
<FONT color="green">022</FONT>    <a name="line.22"></a>
<FONT color="green">023</FONT>        private final MetaDataKey&lt;T[]&gt; componentMarkerIdentifier = new MetaDataKey&lt;T[]&gt;() {<a name="line.23"></a>
<FONT color="green">024</FONT>            private static final long serialVersionUID = 1L;<a name="line.24"></a>
<FONT color="green">025</FONT>        };<a name="line.25"></a>
<FONT color="green">026</FONT>    <a name="line.26"></a>
<FONT color="green">027</FONT>        /**<a name="line.27"></a>
<FONT color="green">028</FONT>         * Constructor with a type parameter (needed to create arrays).<a name="line.28"></a>
<FONT color="green">029</FONT>         * <a name="line.29"></a>
<FONT color="green">030</FONT>         * @param privilegeType<a name="line.30"></a>
<FONT color="green">031</FONT>         */<a name="line.31"></a>
<FONT color="green">032</FONT>        public MarkerSupport(final Class&lt;T&gt; privilegeType) {<a name="line.32"></a>
<FONT color="green">033</FONT>            this.privilegeType = privilegeType;<a name="line.33"></a>
<FONT color="green">034</FONT>        }<a name="line.34"></a>
<FONT color="green">035</FONT>    <a name="line.35"></a>
<FONT color="green">036</FONT>        /**<a name="line.36"></a>
<FONT color="green">037</FONT>         * Get the privilege type.<a name="line.37"></a>
<FONT color="green">038</FONT>         * <a name="line.38"></a>
<FONT color="green">039</FONT>         * @return the current property value<a name="line.39"></a>
<FONT color="green">040</FONT>         */<a name="line.40"></a>
<FONT color="green">041</FONT>        public Class&lt;T&gt; getPrivilegeType() {<a name="line.41"></a>
<FONT color="green">042</FONT>            return this.privilegeType;<a name="line.42"></a>
<FONT color="green">043</FONT>        }<a name="line.43"></a>
<FONT color="green">044</FONT>    <a name="line.44"></a>
<FONT color="green">045</FONT>        /**<a name="line.45"></a>
<FONT color="green">046</FONT>         * {@inheritDoc}<a name="line.46"></a>
<FONT color="green">047</FONT>         */<a name="line.47"></a>
<FONT color="green">048</FONT>        @Override<a name="line.48"></a>
<FONT color="green">049</FONT>        public final boolean handleComponent(final Component component) {<a name="line.49"></a>
<FONT color="green">050</FONT>            final Collection&lt;T&gt; readValues = this.readValues(component);<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>            return !readValues.isEmpty()<a name="line.52"></a>
<FONT color="green">053</FONT>                    &amp;&amp; this.doHandleMissingValues(component, readValues);<a name="line.53"></a>
<FONT color="green">054</FONT>        }<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>        /**<a name="line.56"></a>
<FONT color="green">057</FONT>         * Default implementation will just mark the component so it can be found by<a name="line.57"></a>
<FONT color="green">058</FONT>         * {@link #handleComponent(Component)}. If you override this, don't forget<a name="line.58"></a>
<FONT color="green">059</FONT>         * to call super.mark(..).<a name="line.59"></a>
<FONT color="green">060</FONT>         */<a name="line.60"></a>
<FONT color="green">061</FONT>        @Override<a name="line.61"></a>
<FONT color="green">062</FONT>        public void mark(final Component component,<a name="line.62"></a>
<FONT color="green">063</FONT>                final Collection&lt;T&gt; missingValues) {<a name="line.63"></a>
<FONT color="green">064</FONT>            this.writeValues(component, missingValues);<a name="line.64"></a>
<FONT color="green">065</FONT>        }<a name="line.65"></a>
<FONT color="green">066</FONT>    <a name="line.66"></a>
<FONT color="green">067</FONT>        /**<a name="line.67"></a>
<FONT color="green">068</FONT>         * Do nothing in this implementation.<a name="line.68"></a>
<FONT color="green">069</FONT>         */<a name="line.69"></a>
<FONT color="green">070</FONT>        @Override<a name="line.70"></a>
<FONT color="green">071</FONT>        public void markType(final Class&lt;? extends Component&gt; componentClass,<a name="line.71"></a>
<FONT color="green">072</FONT>                final Collection&lt;T&gt; missingValues) {<a name="line.72"></a>
<FONT color="green">073</FONT>    <a name="line.73"></a>
<FONT color="green">074</FONT>        }<a name="line.74"></a>
<FONT color="green">075</FONT>    <a name="line.75"></a>
<FONT color="green">076</FONT>        @SuppressWarnings("unchecked")<a name="line.76"></a>
<FONT color="green">077</FONT>        private void writeValues(final Component component,<a name="line.77"></a>
<FONT color="green">078</FONT>                final Collection&lt;T&gt; missingValues) {<a name="line.78"></a>
<FONT color="green">079</FONT>            if (!missingValues.isEmpty()) {<a name="line.79"></a>
<FONT color="green">080</FONT>                component.setMetaData(this.componentMarkerIdentifier, missingValues<a name="line.80"></a>
<FONT color="green">081</FONT>                        .toArray((T[]) Array.newInstance(this.getPrivilegeType(),<a name="line.81"></a>
<FONT color="green">082</FONT>                                missingValues.size())));<a name="line.82"></a>
<FONT color="green">083</FONT>            }<a name="line.83"></a>
<FONT color="green">084</FONT>        }<a name="line.84"></a>
<FONT color="green">085</FONT>    <a name="line.85"></a>
<FONT color="green">086</FONT>        /**<a name="line.86"></a>
<FONT color="green">087</FONT>         * Handle missing privileges.<a name="line.87"></a>
<FONT color="green">088</FONT>         * <a name="line.88"></a>
<FONT color="green">089</FONT>         * @param component<a name="line.89"></a>
<FONT color="green">090</FONT>         *            will not be null<a name="line.90"></a>
<FONT color="green">091</FONT>         * @param missingValues<a name="line.91"></a>
<FONT color="green">092</FONT>         *            will not be null or empty<a name="line.92"></a>
<FONT color="green">093</FONT>         * @return true if successfully handled<a name="line.93"></a>
<FONT color="green">094</FONT>         */<a name="line.94"></a>
<FONT color="green">095</FONT>        protected abstract boolean doHandleMissingValues(Component component,<a name="line.95"></a>
<FONT color="green">096</FONT>                Collection&lt;T&gt; missingValues);<a name="line.96"></a>
<FONT color="green">097</FONT>    <a name="line.97"></a>
<FONT color="green">098</FONT>        /**<a name="line.98"></a>
<FONT color="green">099</FONT>         * Access missing values. If this returns a non-empty collection,<a name="line.99"></a>
<FONT color="green">100</FONT>         * {@link #doHandleMissingValues(Component, Collection)} will be called.<a name="line.100"></a>
<FONT color="green">101</FONT>         * <a name="line.101"></a>
<FONT color="green">102</FONT>         * @param component<a name="line.102"></a>
<FONT color="green">103</FONT>         * @return<a name="line.103"></a>
<FONT color="green">104</FONT>         */<a name="line.104"></a>
<FONT color="green">105</FONT>        protected Collection&lt;T&gt; readValues(final Component component) {<a name="line.105"></a>
<FONT color="green">106</FONT>            Collection&lt;T&gt; result;<a name="line.106"></a>
<FONT color="green">107</FONT>            final T[] metaData = component<a name="line.107"></a>
<FONT color="green">108</FONT>                    .getMetaData(this.componentMarkerIdentifier);<a name="line.108"></a>
<FONT color="green">109</FONT>            if (metaData == null || metaData.length == 0) {<a name="line.109"></a>
<FONT color="green">110</FONT>                result = Collections.emptySet();<a name="line.110"></a>
<FONT color="green">111</FONT>            } else {<a name="line.111"></a>
<FONT color="green">112</FONT>                result = new HashSet&lt;T&gt;(Arrays.asList(metaData));<a name="line.112"></a>
<FONT color="green">113</FONT>            }<a name="line.113"></a>
<FONT color="green">114</FONT>            return result;<a name="line.114"></a>
<FONT color="green">115</FONT>        }<a name="line.115"></a>
<FONT color="green">116</FONT>    <a name="line.116"></a>
<FONT color="green">117</FONT>    }<a name="line.117"></a>




























































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